What signifies a positive outcome in a Well Leg Raise test?

• A. Radiating pain down the posterior aspect of the symptomatic leg
• B. Radiating pain down the anterior aspect of the asymptomatic leg
• C. Radiating pain down the posterior aspect of the opposite symptomatic leg
• D. No pain experienced

Answer: (C)

A positive outcome in the Well Leg Raise test is indicated by radiating pain down the posterior aspect of the opposite symptomatic leg. This occurs due to irritation or compression of the nerve roots in the lumbar spine, which can be confirmed when the opposite leg is raised. The mechanism behind this is that the tension applied through the straightened leg prompts the neurological structures to react, causing symptoms to radiate along the affected nerve path.

The essence of this test lies in determining if there is a herniated disc or other pathology that affects the lumbar region, particularly in the context where symptoms are predominantly on one side. When the opposite leg exhibits pain, it suggests a significant underlying issue, such as nerve root involvement, rather than just localized problems on the symptomatic leg.